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Round|Natural|GIA

1.28ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2105839193

Certificate GIA 2105839193

Diamond specifications and retailer prices

From $6,883 AUD
As of November 6, 2026
Save $2,516 AUD (27%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $9,398 AUD at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.28ct natural round diamond

This 1.28ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2105839193. Listed at 2 retailers as of November 6, 2026, with prices from $6,883 to $9,398, a $2,516 spread on the same certified stone. Yorxs lists it at $9,398. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.28
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2105839193
Dimensions6.95 × 7.00 × 4.32 mm
L/W Ratio1.01
Top View
6.95 mm7.00 mm1.28 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2105839193
Side View
Table 58.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 61.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $6,883 AUD|Low: $6,883 AUD|High: $9,488 AUD|Avg: $8,131 AUD
Retailer 1
Yorxs
November 6, 2026
Retailer 1$6,883 AUD
Yorxs$9,398 AUD

22 data points across 2 retailers

2 retailers$6,883 AUD to $9,398 AUD

B
Cheapest Retailer
-
$6,883 AUD
Most Expensive
B
Yorxs
060394 · Nov 6
$9,398 AUD
€6,150 EUR
View
1 more retailer has this diamond
Prices start from $6,883 AUDSave up to $2,516 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.28ct Round
$6,883 AUD